#app {
  width: 100%;

  nav {
    width: calc(100% - 240px);
    height: 60pX;
    background-color:  transparent;  // 透明色
    display: flex;
    align-items: center;
    padding: 0 120px;
    position: fixed;  // 固定定位
    z-index: 100;
    top: 0;
    left: 0;
    transition: all 0.3s;

    .left {
      width: 60%;
    }

    .right {
      width: 40%;
      display: flex;
      justify-content: right;

      img {
        width: 20px;
        margin-right: 20px;
        cursor: pointer;
      }
    }

    a {
      margin: 0 20px;
      color: var(--nav_color);
      //color: white;

      &:last-child {
        margin-right: 0;
      }
    }
  }

  nav.show {
    background: var(--nav_bg_show);
    box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.2);

    a {
      color: var(--nav_color_show);
    }
  }

  header {
    width: 100%;
    height: 500px;
    position: relative;

    .title {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      z-index: 1;
      color: white;

      h1 {
        font-size: 30px;
        font-weight: 400;
        text-align: center;

        margin-bottom: 10px;
      }
      p {
        font-size: 18px;
        text-align: center;
      }
    }

    > .dynanic_shuffl {
      position: absolute;  // 绝对定位
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      //height: 500px;
      overflow: hidden;  // 超出部分隐藏
      transition: all 1s;  // 过度动画

      opacity: 0;

      &:first-child {
        opacity: 1;
      }

      img {
        width: 100%;
      }
    }
  }

  main {
    width: calc(100% - 240px);
    padding: 20px 120px;
    min-height: 600px;
    background-color: var(--main_bg);
    color: var(--main_color);
    display: flex;
    justify-content: center;

    .main {
      width: 1200px;
      min-height: 200px;
      display: flex;
      justify-content: space-between;  // 两端对其的方式 ( 一左一右 )

    }
  }

  footer {
    width:100%;
    display: flex;
    height: 230px;
    background-color: var(--footer_bg);
    color: var(--footer_color);
    font-size: 14px;

    .left, .right {
      width: 50%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
    }

    .thank {
      color: #26c6e1;
    }

    .site_info {
      display: flex;
      align-items: center;

      span {
        margin-right: 10px;
        display: flex;
        align-items: center;
      }

      img {
        width: 20px;
        margin-right: 5px;
      }
    }

    .version {
      display: flex;
      span {
        display: flex;
        justify-content: center;
        align-items: center;
        background-color: #333333;
        height: 30px;
        width: 60px;

        &:nth-child(1){
          background-color: #ff9800;
          border-radius: 5px 0 0 5px;
        }
        &:nth-child(2){
          background-color: #26c6da;
          border-radius: 0 5px 5px 0;
        }
      }
    }

    .badges {
      a {
        display: flex;
        align-items: center;
      }
    }

    p {
      margin-bottom: 10px;
    }

    .contact {
      display: flex;
      width: 250px;
      justify-content: space-between;

      margin-bottom: 10px;

      > div {
        position: relative;

        .qq {
          width: 65px;
          position: absolute;
          top: -70px;
          left: -14px;
          transition: all 0.4s;
          opacity: 0;
        }
      }

      .svg {
        width: 28px;
        cursor: pointer;

        &:hover {
          & ~ .qq {
            top: -75px;
            left: -14px;
            opacity: 1;
          }
        }
      }
    }
  }

  .dialog_box {
    .el-dialog {
      width: 400px;
      .top {
        p {
          font-size: 14px;
          margin-bottom: 5px;
        }
        .el-input {
          margin-bottom: 20px;
        }
      }

      .bottom {
        width: 100%;
        display: flex;
        justify-content: flex-end;
      }
    }
  }

}